CVE-2025-43330: 
macOS vulnerability analysis and mitigation

CVE-2025-43330 is a security vulnerability discovered in Apple's macOS operating systems (Sequoia 15.7 and Tahoe 26) that was disclosed and patched on September 15, 2025. The vulnerability affects multiple Apple devices including Mac Studio (2022 and later), iMac (2020 and later), Mac Pro (2019 and later), Mac mini (2020 and later), MacBook Air with Apple silicon (2020 and later), MacBook Pro (16-inch, 2019), MacBook Pro (13-inch, 2020), and MacBook Pro with Apple silicon (2020 and later). The vulnerability was discovered by security researcher Bilal Siddiqui (Apple Support).

The vulnerability exists in the ATS (Apple Transport Security) component of macOS, where a malicious application could potentially break out of its sandbox environment. The issue was addressed by Apple by removing the vulnerable code. The vulnerability has been assigned a CVSS v3.1 base score of 8.2 (HIGH) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N, indicating local access requirements but potentially severe impact (NVD).

The primary impact of this vulnerability is that it allows a malicious application to break out of its sandbox environment, potentially gaining access to resources and data that should be restricted. This could lead to unauthorized access to sensitive information and compromise the security boundaries established by macOS's sandbox protection mechanisms (Apple Support, NVD).

Apple has addressed this vulnerability by removing the vulnerable code in the security updates released for macOS Sequoia 15.7 and macOS Tahoe 26. Users are advised to update their systems to these versions to protect against potential exploitation (Apple Support, Apple Support).